i did the same as Phil from RC-Geeks, bought off eBay cost a tenner.
Waste of time and effort. Initially it worked OK and in fact I was confident enough to use the cycle mount and have a 10 minute ride round our local roads. Something obviously went wrong as the gimbal started going crazy whipping up and down against its stops after about the first 5 minutes. Quickly switched off and never to be used again. The video was fine but the DNG files totally unusable - very pink.
We just need to bind our time and wait for the adapter and more specifically the firmware from DJI.